Indolol prostaglandin compounds

ABSTRACT

Novel compounds of the formulas:   WHEREIN R2 and R6 are hydrogen when Z2 is a single bond and Z2 is a double bond R2 and R6 are absent; R3 is keto,   OH or OR9; R8 is H or OH; R9 is acyl or alkoxyalkyl; Z1 is CH2Ch2- or cis-CH=CH-; Z2 is a single or double bond; Z3 is a single bond or a double bond and it is a double bond when R4 and R5 are hydrogen; Z4 is -CH2CH2- or trans -CH=CH-; Z5 is -CH2CH2or cis-CH=CH-; n is 2 to 5 and m is 1 to 3. The compounds have improved biological stability and they can serve as a reservoir for prostaglandins that have biological activity, in that different prostaglandin compounds stimulate or inhibit smooth muscles, inhibit gastric secretion, lower or raise blood pressure, inhibit lipolysis and inhibit platelet aggregation.

ilnited States atent Zatiaroni [451 June 27, 1972 [54] INDOLOL PROSTAGLANDIN COWOUNDS [7 21 Inventor: Alejandro Zaffaroni, Atherton, Calif.

[73] Assignee: Alza Corporation 22 Filed: Sept. 3, 1970 21 Appl. No 70,392

[52] US. Cl. ..260/326.14 R, 260/514 R, 260/999 [51] Int. Cl. ..C07d 27/56 [58] Field of Search ..260/326. 14 R [56] References Cited OTHER PUBLICATIONS Burger, Medicinal Chemistry, 3rd Ed., Pt. II, (1970), pp.

Primary Examiner-Alex Mazel Assistant Examiner-Joseph A. Narcavage AttorneyPaul L. Sabatine and Steven D. Goldby and wherein R and R are hydrogen when Z is a single bond and Z is a double bond R and R are absent; R, is keto,

H or H OH OR H on For H ;R is

OH or 0R R is H or OH; R is acyl or alkoxyalkyl; Z is CH Ch or cisCH CH; Z is a single or double bond; Z is a single bond or a double bond and it is a double 7 bond when R, and R are hydrogen; Z is -CH CH or trans 18 Claims, No Drawings INDOLOL PROSTAGLANDIN COMPOUNDS BACKGROUND OF THE INVENTION The present invention concerns new and useful compounds related to the prostaglandins. More particularly, the invention pertains to novel indol-S-ol prostaglandins compounds that possess enhanced biological stability, and the property to perform as a pharmaceutical storage depot for eventual in vivo circulation to prostaglandin receptive sites, whereupon the subsequent metabolic separation of the prosta'glandin from the indol-S-ol prostaglandin, the valuable pharmacological properties of the parent prostaglandin are made available for performing its respective physiological function. The new compounds of this invention have the structure as illustrated by the ionic-type generic structure as shown in Formula I which is the functional equivalent of the conventional ionictype structure set forth in the accompanying claims. Formula I is as follows:

carbon carbon bond CH,CH, and a cis unsaturated CH- CH; and wherein n is 2 to 5 and m is l to 3. The wavy line in the formula indicates the stereochemistry of the attached group on the cyclopentyl ring or on the side chain and it indicates either an a or [3 configuration. The dotted line indicates that the attached group is a oriented or on the same side of the cyclopentyl ring as the carboxyl side chain and a wedged line indicates that the B-substituents are oriented on the same side of the ring as the alkyl side chain. The wavy line on the alkyl side chain indicates that the attached group may have a configuration represented by the terms sinister (S) and rectus (R) which for these compounds are equivalent nomenclature of a and B respectively.

The novel and the unobvious compounds of the invention as embraced by Formula l are primarily related 'to the prostaglandins, a family of naturally occurring endogenous biologically important compounds possessing diverse and valuable pharmacological properties. The prostaglandins, a

wherein R and R, are hydrogen when Z is a single 40 family of lipid acids, are generally characterized as being 20 covalent bond and R and R, are absent when 2 is a double covalent bond; R is a member selected from the group consisting of keto,

carbon double bond CH CH; 2, is selected from the group consisting of a single or double bond; 2 is a single bond except when R, is hydrogen and R, is hydrogen; and when R and R are hydrogen Z, is a double bond; 2 is selected from the group consisting of a saturated carbon carbon bond CH CH and a trans unsaturated carbon carbon bond CH= CH; 2:, is selected from the group consisting of a saturated carbon prostanoic derivatives and they are usually separated into categories including prostaglandins of the E,F, A and B Series. The separation of the groups depends on the presence or absence of double bonds, hydroxyl and ketone groups, for example the E-type prostaglandins have an i la-hydroxyl group and a 9-keto group in the five-membered cyclopentyl ring while in the F-type prostaglandins the 9-position is substituted with an a-hydroxyl group and the compound still retains the ll-hydroxyl group. The A-type and B-type prostaglandins do not have the familiar ll-hydroxyl group that is present in the ES and Fs but they are dehydrated derivatives of the compounds. The prostaglandins are also classified as primary, secondary and tertiary depending on the number of double bonds present in the prostaglandin. For example, the primary prostaglandins containing a 13:14 double bond are called E and F The prostaglandins that contain an additional double bond at the 5:6 position are designated as E, and F and the prostaglandins with an added third double bond positioned at 17:18 are termed E and F respectively, including the classification also used for the various categories.

The valuable properties known by the art to be possessed by the prostaglandin family includes the ability to modify the activity of alimentary and reproductive smooth muscles, the ability to block acid mucous and enzyme secretions by the .stomach, the property to stimulate the synthesis of adrenal corticoids, to modify blood pressure, lipolysis, and to possibly serve as a mediator of hormonal functions. While the family as a group possesses these actions, the actions of each of the E, F, A and B prostaglandins are often quantitatively dissimilar and sometimes they are opposed. For example, the prostaglandins of the E-type configuration are vasodepressors and they also decrease the motility of the uterus at ovulation while the prostaglandins of the F-type in certain species, have the opposite effects. Prostaglandin E also inhibits platelet aggregation while the F-prostaglandins are devoid of this property. The prostaglandins of the A-type structure are like the E-type with respect to their vascular smooth muscle action but they possess a differing degree of relative potency as antilepolytic gastrointestinal secretion regulating agents.

Even though the prostaglandins are known to possess the above mentioned valuable pharmacological utilities'in vitro that could selectively be used to modify activity of various glands, tissues and organs, the potential pharmaceutical utilization of these compounds has not been presently realized in vivo because the prostaglandins lack the necessary biological stability thatlends itself to therapeutic application of the prostaglandins. For example, the prostaglandins on systemic injection rapidly undergo reduction of double bonds, dehydrogenation and fi-oxidation with formation of compounds possessing less pharmacological activity. ln addition, known biologically active prostaglandin E-type chemical structures in the presence of acidic conditions readily change to prostaglandins of the A-type structure that possess different bioiogical activities. prostaglandins are known by the art to evidence widely different biological activities which makes their physiological application seemingly more difficult and sometimes unpredictable in the face of these possible in vivo changes in chemical structure and physiological activities. These changes also lessen the availability of useful prostaglandin for in vivo use by changing useful prostaglandins that can be absorbed from the vascular system to inactive metabolic forms of the prostaglandins.

In the light ofthe above presentation, it will be appreciated by those versed in the art that a need exists for increasing the biological stability of the family of prostaglandins while essentially maintaining and readily making available the prostaglandins to their biological receptors. It will also be appreciated that a need exists for providing compounds that can act as a reservoir of prostaglandins for vascular circulation and subsequent availability of the prostaglandin to cells, glands and tissues for their immediate physiological use while simultaneously increasing the biological stability of the prostaglandin.

Accordingly, it is an immediate object of the present invention to make available to the art novel and unobvious prostaglandin compounds that overcome the problems often associated with the prior art.

Yet another object of the present invention is to provide new prostaglandin compounds that possess enhanced biological stability against rapid metabolism to permit manifestation of their known pharmacological properties following administration in vivo.

Still yet another purpose of the subject invention is to provide prostaglandin compounds that can act as both an intracellular and extracellular biological reservoir of the prostaglandin for circulating within the vascular system to ensure increased availability as needed by the cells, glands and tissues for their immediate use.

Yet still another object of the invention is to provide prostaglandin compounds that possess enhanced cell membrane permeability in certain hosts for improvement of intracellular prostaglandin performance.

These and other features, objects and advantages of the present invention will become more readily apparent from the following detailed description of the invention taken in conjunction with the accompanying claims.

SUMMARY OF THE INVENTION The present invention concerns novel aminoethyl indolol prostaglandin compounds that are characterized by desirable properties such as an improved biological stability, the property to circulate in the vascular system as a reservoir for a continual source of prostaglandins at the needed biological site by release of the parent prostaglandin, and also by enhanced membrane permeability in certain laboratory animals.

DESCRlPTlON OF THE lNVENTlON The novel compounds of the invention as illustrated by Formula l are prepared by reacting a prostaglandin of Formula II:

wherein R and R are hydrogen with the proviso that Z; is a single bond and R and R are absent when 2, is a double bond; R is keto,

R is hydroxyl or OR R is hydrogen or hydroxyl; R, is an acyl moiety of one to 18 carbon atoms derived from a hydrocarbon carboxylic acid or an a-alkoxy-alkyl; Z is a saturated carbon carbon bond CH Cl-l or a cis unsaturated carbon carbon bond CH CH--; Z as either a single or double bond; Z, is a single bond or a double bond and it is a double bond when R is hydrogen and R is hydrogen; 2, is a saturated carbon car'- bon bond -CH CH or a trans unsaturated carbon carbon bond CH CH-; 2,, is a saturated carbon carbon bond CH CH or cis unsaturated CH CH; n is 2 to 5 and m is l to 3. The wavy line in the formula indicates the stereochemistry of the attached substituents on the cycloalkyl ring or on the side chain may have either an a or a B configuration. The dotted line indicates that the attached groups are a-oriented or on the same side of the cyclopentyl ring or the carboxyl side chain and the wedged line indicates that the B- substituents are oriented on the same side of the ring as the alkyl side chain. The wavy line on the alkyl side chain indicates that the attached groups may have a configuration represented by the terms sinister (S) and rectus (R) which for these compounds are equivalent nomenclature of a and B; with an indol-S-ol of Formula III:

- TCHZC HZNHQ gredients until all the ingredients are in solution. The novel product is obtained by chilling the resulting mixture to precipitate the crystals, or the product can be isolated by the addition of a miscible diluent of low polarity, or by standard evaporation techniques. The obtained crystals, amorphous or powders, are filtered, washed and dried, usually in a desiccator over a drying agent, to a constant weight.

The starting materials used herein to synthesize the novel compounds of Formula 1 are prepared in known ways or they are readily obtained from commercial sources. The reacting materials of Formula 11 are easily prepared in art known ways either by isolating the prostaglandin from natural sources, for example, the vesicular glands of sheep, or by the enzymatic conversion from fatty acid substrates such as arachidonic acid, and depending on the substituents desired, routinely chemically transforming double bonds to single bonds by hydrogenation, converting keto groups to hydroxymethylene groups by reduction, by dehydrating to introduce double bonds, by forming carbinol derivatives by treating a carbo(lower)alkoxy group with an alkali metal alumino hydride reducing agent such as lithium aluminum hydride and the like. Specific prior art methods that set forth the procedures useful to provide all of the compounds of Formula 11 are found in Science, Vol 158, pages 382 to 391, 1967; Recueil, Vol 85, pages 1233 to 1250, 1966; Biochem. Biophys. Acta., Vol 106, pages 215 to 217, 1965, Agnew. Chem. Inter. Ed. V014, pages 410 to 416,1965;Expen'entia, Vol 21, pages 113 to 176, 1965; Recueil, Vol 85, pages 1251 to 1253, 1966 and other art recorded procedures.

The prostaglandin compounds depicted by Formula 11 can also be chemically synthesized by well-known methods, for example, frorn 2-oxobicyclo-(3.3.0)-Oct-6-en-3-one as described in Tetrahedron Letters, Vol 4, pages 311 to 313, 1970; by the hydrogenation of 1l,l5-bis(tetrahydropyranyl) ether of 9a,] la, (S)-trihydroxy-5-cis,l3-trans-prostadienoic acid over Pd/C followed by hydrolysis and treatment with Jones reagent to give the resulting prostaglandin as reported in J, Am. Chem. Soc., Vol 92, pages 2586 to 2587, .1970; by the acid-catalyzed opening and rearrangement of epoxybicyclo- (3.l.0)-hexane as described in J. Am. Chem. $00., Vol 91, pages 5364 to 5371, 1969; by the reduction of 9-oxo and 15- oxo prostaglandin derivatives to give the R and S isomers of the corresponding hydroxyls and the dehydration of 11- hydroxy-9-oxoprostanoic acid to give the ketones as recorded in J. Org. Chem., Vol 34, pages 3552 to 3557, 1969; and J. Lipid Research, Vol 10, pages 320-325, 1969; as prepared by reduction of 2-oxo-3-oxo-6-exo-[trans3-3-(S)hydroxy-heptl-enyl]-endo-7-acetoxy-cis-bicyclo[3.3.0]octane followed by reduction and treatment with Wittig' reagent to give the corresponding prostaglandin as in J. Am. Chem. Soc., 'Vol 91, pages 5675 to 5677, 1969; and other reported chemical synthesis embracing compounds within Formula 11 such as J. Am. Chem. Soc., Vol92, pages 937 to 938, 1970;]. Am. Chem. Soc., Vol 91, pages 5675 to 5677, 1969; Tetrahedron Letters, Vol 5, pages 465 to 470, 1966; The Proceedings of the Robert A. Welch Foundation Conference on Chemical Research, Vol XII, pages 51 to 79, 1969; Chem. Abst., Vol 66, page 75770; and Tetrahedron Letters, No. 59, pages 5185-5188, 1969.

Representative of the acyl moieties embraced with R are the acyl groups containing one to 18 carbon atoms such as formyl, acetyl, propionyl, butyryl, isovaleryl, valeryl, hexanoyl, caproyl, octanoyl, heptanoyl, lauroyl, palmitoyl, stearoyl, nonanyl, oleoyl and the like. Exemplary of a-alkoxyalkyl groups embraced with R is the group cis,8(12),]3-trans-prostatrienoic acid, (PGB R is hydrogen or the lower alkyls of one to seven carbon atoms as just set forth.

l102,15(S)-dihydroxy-9-oxo-l3-trans-prostenoic acid (F615,);

l l B, l 5(R)-dihydroxy-9-oxo-l 3-trans-prostenoic acid 1 1 ,15- epi-PGEQ; its antipodes, ent-1l,15-epi-PGE l1a,15(S)- dihydroxy-9-oxo-5-cis, 13-trans-prostadienoic acid, (F015,); 1 10!, l 5(S )-dihydroxy-9-oxo-5-cis, l 3-trans, 1 7-cisprostatrienoic acid, (PGE 15(S)-hydroxy-9-oxo-l3-transprostadienoic acid,(PGA 15(S)-hydroxy-9-oxo-5-cis, 10,13-trans-prostatrienoic acid, (PGA -9a,11a,15(S)- trihydroxy-l 3-trans-prostenoic acid, PGF,,,) 93,] la, 1 5( S trihydroxy-l 3-trans-prostenoic acid,( PCT-" ,1) 98,1 1B,15(R)- trihydroxy-l3-trans-prostenoic acid, (11,15-epi-PGFw); its antipode, ent-l 1,15-epi-1Gi= 901,1 1a, 1 5(S)-tnhydroxy-5- cis,1 3-trans-prostadienoic acid,( PGFZa) 93,1 la,15(S)- trihydroxy-S-cis, l 3-trans-prostadienoic acid, PGF 901,1 la, 1 5( S )-trihydroxy-5-cis, 1 3-trans, l 7-cis-prostatrienoic acid,(PGl- 9,8,1 101,15(S)-trihydroxy-5-cis,l3-trans-l7-cisprostatrienoic acid, (PGEQE); l5(S)-hydroxyoxo-8( l2), 1 3- trans-prostadienoic acid,(PGB,); l5(S)-hydroxy-9-oxo-5- dihydroxy-9-oxo-8( l2),1 3-trans-prostadienoic acid,( 19- hydroxy P68 15( S l 9-hydroxy-9-oxol 0, l 3-transprostadienoic acid, (19-hydroxy PGA 15(S)-hydroxy-9- oxo-8( 12) prostanoic acid, (dihydro PGB and the like.

The indol-5-o1 starting material of Formula 111 is also known to the art as 3-(2-aminoethyl)-indol-5-ol, serotonin and 5- hydroxytryptamine. The indolol can be obtained from commercially available sources or it can be isolated from natural products such as beef serum by the procedures disclosed in Science, Vol 108, pages 329 to 330, (1948), and in J. Biol. Chem., Vol 176, pages 1237 to 1241; pages 1243 to 1251, (1948); ibid 180, pages 961 to 969, (1949). Serotonin can be easily synthesized starting with S-benzyloxyindole as reported in J. Am. Chem. Soc., Vol 73, pages 5514 to 5521; and according to the procedures disclosed in U.S. Pat. Nos. 2,715,129 and 2,947,757.

The solvents suitable for the purposes of the present invention include the more polar type of solvents such as tetrahydrofuran, chloroform, acetone, methylene chloride, ethylene chloride, dioxane, isobutyl ketone, methyl isobutyl ketone, dimethyl ether, diethyl ether, alkanols such as methanol, methyl butanol, n-amyl alcohol, 2-ethyl hexyl alcohol, ethylene glycol, ethanol, isopropanol, hexanol, butanol, pentanol and lesser polar solvents such as benzene, carbon tetrachloride, cycloalkanes such as cyclopentane, 1,2- dimethylcyclopentane, cyclooctane, isopropylcyclohexane, cyclohexane, and methylcyclohexane; alkanes such as 3- methylpentane, n-hexane, n-heptane, and the like.

The following examples are given simply to illustrate this invention, but they are not in any way to be construed as limiting the scope of the invention as other means for performing the invention will be obvious to those versed in the art in the light of this disclosure.

EXAMPLE 1 To a room temperature solution of lla,15(S)-.dihydroxy-9- oxo-l3-trans-prostenoic acid (0.355 gram, 0.0001 mole) in milliters of dry methylene chloride there is added 3-(2- aminoethyl)indol-5-ol(0.176 gram, 0.001 mole). The mixture is heated to about 35 C and cooled to room temperature. Then, 200 milliters of petroleum ether is added and the resulting mixture is chilled in an ice bath. The solids are filtered, washed with petroleum ether and suspended in warm dry petroleum ether. Petroleum ether is added until turbidity develops and the mixture is chilled overnight. The crystals are filtered, washed with petroleum ether and dried in a desiccator over concentrated sulfuric acid to a constant weight, to

give 3-( Z-aminoethyl indol-S-ol- 1 :,15(S)-dihydroxy-9-oxo- 1 3-trans-prostenoate.

EXAMPLE 2 To a room temperature 30 ml solution of ethanol containing 0.352 gram, 0.001 mole of l1a,15(S)-dihydroxy-9-oxo-5-cis- 13-trans-prostadienoic acid is added with constant stirring a 30 ml of warmed, methanol. solution of 3-( 2-aminoethyl)- indol-S-ol. Next, the solution is evaporated under vacuum and the resulting product is triturated with ether-benzene mixtures and the product 3-( 2-aminoethyl )-indol-5-ol-1 1a, 1 5 (S I dihydroxy-Q-oxo-S-cis-l3-trans-prostadienoate dried in a desiccator over concentrated sulfuric acid.

EXAMPLE 3 EXAMPLE 4 The synthesis of 3-( 2-aminoethyl)-indol-5-ol-9a,1 la, 1 5(8)- trihydroxy-5-cis,lB-trans-prostadienoate is carried out by first adding to a room temperature 50 ml tetrahydrofuran solution containing 0.708 gram, 0.002 mole of 9a,11a,15(S)- trihydroxy-S-cis-l 3-trans-prostadienoic acid to a 50 ml tetrahydrofuran solution containing 0.352 gram, 0.002 mole of 3-( 2-aminoethyl)-indol-5-ol with constant stirring until the mixing of the two solutions is complete. Next, the mixed solution is warmed to about 50 to 55 C for one-half to threequarter hours to ensure essentially complete formation of the desired product. Then, the solution is cooled to room temperature and the solvent evaporated with the resulting product triturated with dry benzene. Finally, the product is filtered, washed with a little benzene and dried in a vacuum desiccator to constant weight.

Other novel compounds that are readily prepared according to the spirit of the invention are for example, 3-( 2- aminoethyl)-indol-5-ol-l 1a,l5(S)-dihydroxy-9-oxo-5-cis-13- trans,1 7-cis-prostatrienoate; 3-( 2-aminoethyl)-indol-5-oll 5( S )-hydroxy-9-oxol 0,1 S-trans-prost'adienoate; 3-( 2- aminoethyl )-indol-5 -ol-9B,l la, 1 5( S )-trihydroxy-l 3-transprostenoate; 3-( 2-aminoethyl)-indol-5-ol-9B, 1 1a,] 5(8)- trihydroxy-5-cis,l 3-trans-prostadienoate; 3-(2-aminoethyl)- indol-5-ol-9a,l la, 1 5(S)-trihydroxy-5-cis,l 3-trans, l 7-cisprostatrienoate; 3-( Z-aminoethyl)-indol-5-ol-9B,l la, 1 5(8)- trihydroxy-S -cis, l 3-transl 7-cis-prostatrienoate; 3-( 2- aminoethyl )-indol-5-oll 5(S )-hydroxy-9-oxo-8( l2), 1 3-transprostadienoate; 3-( 2-aminoethyl )-indol-5-oll 5(S )-hydroxy- 9-oxo-5-cis,8(12),13-trans-prostatrienoate; 3-(2-aminoethyl)- indol-S-ol-l5(S),19-dihydroxy-9-oxo-8( l2),1 3-transprostadienoate; 3-(2aminoethyl)-indol-5-ol-15(8), l9- dihydroxy-9-oxol 0, 1 3-trans-pr0stadienoate; 3-( 2- aminoethyl )-indo1-5 -ol-l 101,1 5( S )-dihydroxy-9-oxoprostanoate; and, 3-( 2-aminoethyl )-indol- 5-ol-15(S)-hydroxy-9-oxo-8( l 2 )prostanoate.

This invention resides in making available to the art the novelabove described indolol, prostaglandins that are presently believed to possess unobvious and improved properties not suggested by the prior art such as enhanced stability towards biological conditions, the abiiity to act as a reservoir and thereby to serve as a source of the prostaglandin moiety when the indolol-prostaglandin compound is circulated by the vascular system to glands, tissues, cells and the like. When in contact with the cellular membranes, the indolol prostaglandins may enter the cell for subsequent metabolic hydrolysis of the compound to make the prostaglandin moiety available at the needed biological site. in addition, the compounds possess valuable properties that make them important for laboratory studies including tropical absorption, cellular diffusion experiments, and the like.

The novel compounds of the invention can be used by the pharmaceutical and the veterinary arts in a variety of pharmaceutical preparations or veterinary preparations. In these preparations, the new compounds are administrable in the form of tablets, pills, powders capsules, injectables, solutions, suppositories, emulsions, dispersions, food premix and in other suitable forms. The pharmaceutical or veterinary preparation which contains the compound is conveniently admixed with a non-toxic pharmaceutical organic carrier or a non-toxic pharmaceutical inorganic carrier. Typical of phat-,- maceutically acceptable carriers, are for example, water, gelatine, lactose, starches, magnesium stearate, talc, vegetable oils, polyalkylene glycols, petroleum jelly and other conventionally employed pharmaceutically acceptable carrier. The pharmaceutical preparation may also contain non-toxic auxiliary substances such as emulsifying, preserving, wetting agents and the like, as for example sorbitan monolaurate, triethanolamine oleate, polyoxyethylene sorbitan monopalmityl, dioctyl sodium sulfosuccinate, and the like.

Exemplary of a typical method for preparing a tablet containing the active ingredient is to first suitably comminute the active ingredient with a diluent such as starch, sucrose, kaolin or the like to form a powder mixture. Next, the just prepared mixture can be granulated by wetting with a non-toxic binder such as a solution of gelatin, acacia mucilage, corn syrup and the like and after mixing the composition is screened to any predetermined particle sieve size. As an alternative, if preferred to granulation, the just prepared mixture can be slugged through conventional tablet machines and the slugs comminuted before the fabrication of the tablets. The freshly prepared tablets can be coated or they can be left uncoated. Representative of suitable coatings are the non-toxic coatings including shellac, methylcellulose, camauba wax, styrenemaleic acid copolymers and the like. For oral administration, compressed tablets containing 0.1 milligram to 5 milligrams calculated as the free acid of the prostaglandins are manufactured in the light of the above disclosure and by art known fabrication techniques well known to the art and set forth in Remington s Pharmaceutical Science, Chapter 39, Mack Publishing Co., 1965.

The manufacture of capsules for oral use consists essentially of mixing the active compound-with a non-toxic carrier and enclosing the mixture in a gelatin sheath. The capsules can be in the art known soft form of a capsule made by enclosing the compound in, intimate dispersion-within an edible oil or the capsule can be a hard capsule consisting essentially of the novel compound mixed with a non-toxic solid such as talc, calcium stearate, calcium carbonate or the like.

The daily dose administered for the compounds will of course vary with the particular novel compound employed because of the varying potency of the compounds, the chosen route of administration and the size of the recipient. The dosage administered is not subject to definite bounds, but it will usually be an effective amount of the pharmacologically activefree acid form produced upon the metabolic release of the prostaglandin to achieve the biological function of the prostaglandin. Representative of a typical method for administering the indolol prostaglandin compounds isby the injectable-type administration route. By this route, a sterile solution containing the indolol prostaglandin compound is administered intravenously at the rate of 0.01 microgram to 0.15 microgram per minute per kilogram of body weight by means of an infusion pump, at the rate of 10 to 15 milliliter per hour. For example, the compound 3(Z-aminoethyl)-indol-5-ol- 901,11a,15(S)-trihydroxy-l3-trans-prostenoate can be administered by this route for producing stimulation of smooth muscles. The compound is administered by the injectable route in a form suited for injection, such as mixed with sterile physiological saline, or in aqueous solutions having incorporated therein an agent that delays absorption such as aluminum monostearate and the like.

Suitable topical preparations can easily be prepared by, for example, mixing 500 mg of the indolol prostaglandin with l g of cetyl alcohol, 1 g of sodium lauryl sulfate, 40 g of liquid silicone DC. 200 sold by Dow Corning Co., Midland, Michigan, 43 g of sterile water, 0.25 g of methylparaben and 0.15 g of propylparaben and warming the mixture with constant stirring to about 75 C and then permitting the preparation to congeal. The preparation can be readily applied to the skin by inunction or it can be applied topically by dispensing the preparation from a conventional surgical gauze dispenser, and the like. Suitable procedures for preparing topical applications are set forth in Remingtons Pharmaceutical Science, Chapter 37, as cited supra.

The compounds of this invention can also be conveniently administered in aerosol dosage form. An aerosol form can be described as a self-contained sprayable product in which the propellant force is supplied by a liquified gas. For administering a self-propelled dosage form of about 100 mg to 500 mg that is used about 3 or 4 times daily for inhalation therapy, the bronchodialator 3-( Z-aminoethyl )-3-indol-5-ol-l 101,1 5(S)- dihydroxy-9-oxo-5-cis,l3-trans-prostadienoate is suspended in an inert non-toxic propellant in a commercially available compressed-gas aerosol container. Suitable propellants include trichloromonofluoromethane, dichlorodifluoromethane, dichlorodifluoroethane, monochlorodifluoroethane and mixtures thereof. The inert gas can also be mixed with non-toxic cosolvents such as ethanol, if desired, to produce the aerosol form. If the compound is administered by oral inhalation employing conventional nebulizers, it is convenient to dilute in an aqueous solution about 1 part of the indolol prostaglandin with about 200 to 300 parts of solution, for administering 3 or 4 times per day.

For administering to valuable domestic animals or for administering to laboratory animals for scientific studies, the compound is prepared in the form of a food premix, such as mixing with dried fish meal, oatmeal and the like, and then the prepared premix is added to the regular feed, thereby administering the compound to the domestic or laboratory animal in the form of feed.

The above examples and disclosure are set forth merely for illustrating the mode and the manner of the invention and various modifications and embodiments can be made by those skilled in the art in the light of the invention without departing from the spirit of the invention.

1 claim:

1. A compound selected from the group of compounds of the formulae:

Ba 2 R2 and ; R7 Rs OH 0R0 R is hydrogen or I H R is hydrogen,

H H H 0.

H OH ORv B hydroxyl; R is hydrogen or hydroxyl; Z, is CH,CH,-- or cis -Cl-l CH; Z, is a singleor double bond; Z is a single bond or double bond and it is a single bond when and R, are hydrogen; 2, is CH,CH or trans CH C Z is Cl"l Cl-l, or cis -Cl-l CH; n is 2 to 5 and m is l to 3.

2. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol l5(S)-hydroxy-9-oxo-8( 12 prostanoate.

3. A compound according to claim 1 wherein the compound is 3-(2-a.rninoethyl)-indol-5-ol l1a,l5(S)-dihydroxy-9-oxo- 1 S-trans-prostenoate.

4. A compound according to claim 1 wherein the compound is 3-( 2-aminoethyl)-indol-5-ol 1 1a, 1 5(S)-dihydroxy-9-oxo-5- cis,l 3-trans-prostadienoate. A

5. A compound according to claim 1 wherein the compound is 3-( 2-aminoethyl)-indol-5-ol 9a,1 l a, l 5( S )-trihydroxyl 3- trans-prostenoate.

6. A compound according to claim 1 wherein the compound is 3 -(2-aminoethyl)-indol-5-ol l 1a,]5(S)-dihydroxy-9-oxo-5- cis, l 3-transl 7-cis-prostatrienoate.

7. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol l5(S)-hydroxy-9-oxo-l0,l 3- trans-prostadienoate.

8. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol l5(S)-hydroxy-9-oxo-5- cis,10,l 3-trans-prostatrienoate.

9. A compound according to claim 1 wherein the compound is 3-( Z-aminoethyD-indol-S-ol 93,! la, 1 5(S)-trihydro'xyl 3- trans-prostenoate.

10. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)1indol-5-ol 9a,] la, 1 5(S)-trihydroxy-S-cis, l B-trans-prostadienoate.

11. A compound according to claim 1 wherein the compound is 3-( 2-aminoethyl)-indol-5-ol 913,1 la, 1 5(S)-trihydroxy-5-cis,l 3-trans-prostadienoate. 1

12. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 901,1 1a, 1 5(S)-trihydroxy-5-cis,l 3-trans, l 7-cis-prostatrienoate.

13. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 913,1 1a,] 5(S)-trihydroxy-5-cis, l 3-trans-17-cis-prostatrienoate.

14. A compound according toclaim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 15(S)-hydroxy-9-oxo-8 12), l 3-trans-prostadienoate.

15. A compound according to claim '1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol l5(S)-9-oxo-5- eis,8( l 2),by1 3-trans-prostatrienoate.

16. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 15(8), l9-dihydroxy-9- oxo-8( 12), l 3-trans-prostadienoate.

17. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 15(8), l9-dihydroxy-9- oxol 0, l 3-trans-prostadienoate.

18. A compound according to claim 1 wherein the compound is 3-( 2-aminoethyl)-indol-5-ol 1 la,15(S)-dihydroxy-9- oxo-prostanoate.

I t I l 

2. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 15(S)-hydroxy-9-oxo-8(12)-prostanoate.
 3. A compound according to claim 1 wheRein the compound is 3-(2-aminoethyl)-indol-5-ol 11 Alpha ,15(S)-dihydroxy-9-oxo-13-trans-prostenoate.
 4. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 11 Alpha ,15(S)-dihydroxy-9-oxo-5-cis,13-trans-prostadienoate.
 5. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 9 Alpha ,11 Alpha ,15(S)-trihydroxy-13-trans-prostenoate.
 6. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 11 Alpha ,15(S)-dihydroxy-9-oxo-5-cis,13-trans-17-cis-prostatrienoate.
 7. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 15(S)-hydroxy-9-oxo-10,13-trans-prostadienoate.
 8. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 15(S)-hydroxy-9-oxo-5-cis,10,13-trans-prostatrienoate.
 9. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 9 Beta ,11 Alpha ,15(S)-trihydroxy-13-trans-prostenoate.
 10. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 9 Alpha ,11 Alpha ,15(S)-trihydroxy-5-cis,13-trans-prostadienoate.
 11. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 9 Beta ,11 Alpha ,15(S)-trihydroxy-5-cis,13-trans-prostadienoate.
 12. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 9 Alpha ,11 Alpha ,15(S)-trihydroxy-5-cis,13-trans,17-cis-prostatrienoate.
 13. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 9 Beta ,11 Alpha ,15(S)-trihydroxy-5-cis,13-trans-17-cis-prostatrienoate.
 14. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 15(S)-hydroxy-9-oxo-8(12),13-trans-prostadienoate.
 15. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 15(S)-9-oxo-5-cis,8(12),13-trans-prostatrienoate.
 16. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 15(S), 19-dihydroxy-9-oxo-8(12),13-trans-prostadienoate.
 17. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 15(S), 19-dihydroxy-9-oxo-10,13-trans-prostadienoate.
 18. A compound according to claim 1 wherein the compound is 3-(2-aminoethyl)-indol-5-ol 11 Alpha ,15(S)-dihydroxy-9-oxo-prostanoate. 